欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  移动技术

iOS实现视频和图片的上传思路

程序员文章站 2024-02-14 16:53:22
关于ios如何实现视频和图片的上传, 我们先理清下思路,然后小编根据思路一步一步给大家详解实现过程。 思路: #1. 如何获取图片? #2. 如何获取视频...

关于ios如何实现视频和图片的上传, 我们先理清下思路,然后小编根据思路一步一步给大家详解实现过程。

思路:

#1. 如何获取图片?

#2. 如何获取视频?

#3. 如何把图片存到缓存路径中?

#4. 如何把视频存到缓存路径中?

#5. 如何上传?

接下来, 我们按照上面的思路一步一步实现

首先我们新建一个类, 用来储存每一个要上传的文件uploadmodel.h

#import <foundation/foundation.h>
@interface uploadmodel : nsobject
@property (nonatomic, strong) nsstring *path;
@property (nonatomic, strong) nsstring *type;
@property (nonatomic, strong) nsstring *name;
@property (nonatomic, assign) bool   isuploaded;
@end

#1. 如何获取图片?

从相册选择 或者 拍照,

这部分可以用uiimagepickercontroller来实现

代码如下:

- (void)actionphoto {
  uialertcontroller *alertcontroller = \
  [uialertcontroller alertcontrollerwithtitle:@""
                    message:@"上传照片"
                 preferredstyle:uialertcontrollerstyleactionsheet];
  uialertaction *photoaction = \
  [uialertaction actionwithtitle:@"从相册选择"
               style:uialertactionstyledefault
              handler:^(uialertaction * _nonnull action) {
                nslog(@"从相册选择");
                self.imagepicker.sourcetype  = uiimagepickercontrollersourcetypephotolibrary;
                self.imagepicker.mediatypes = @[(nsstring *)kuttypeimage];
                self.imagepicker.allowsediting = yes;
                [self presentviewcontroller:self.imagepicker
                         animated:yes
                        completion:nil];
              }];
  uialertaction *cameraaction = \
  [uialertaction actionwithtitle:@"拍照"
               style:uialertactionstyledefault
              handler:^(uialertaction * _nonnull action) {
                nslog(@"拍照");
                if ([uiimagepickercontroller issourcetypeavailable:uiimagepickercontrollersourcetypecamera]) {
                  self.imagepicker.sourcetype    = uiimagepickercontrollersourcetypecamera;
                  self.imagepicker.cameracapturemode = uiimagepickercontrollercameracapturemodephoto;
                  self.imagepicker.cameradevice   = uiimagepickercontrollercameradevicerear;
                  self.imagepicker.allowsediting   = yes;
                  [self presentviewcontroller:self.imagepicker
                           animated:yes
                          completion:nil];
                }
              }];
  uialertaction *cancelaction = \
  [uialertaction actionwithtitle:@"取消"
               style:uialertactionstylecancel
              handler:^(uialertaction * _nonnull action) {
                nslog(@"取消");
              }];
  [alertcontroller addaction:photoaction];
  [alertcontroller addaction:cameraaction];
  [alertcontroller addaction:cancelaction];
  [self presentviewcontroller:alertcontroller animated:yes completion:nil];
}

#2. 如果获取视频?

从相册选择 或者 拍摄

这部分也可以用uiimagepickercontroller来实现

代码:

- (void)actionvideo {
  uialertcontroller *alertcontroller = \
  [uialertcontroller alertcontrollerwithtitle:@""
                    message:@"上传视频"
                 preferredstyle:uialertcontrollerstyleactionsheet];
  uialertaction *photoaction = \
  [uialertaction actionwithtitle:@"从视频库选择"
               style:uialertactionstyledefault
              handler:^(uialertaction * _nonnull action) {
                nslog(@"从视频库选择");
                self.imagepicker.sourcetype = uiimagepickercontrollersourcetypephotolibrary;
                self.imagepicker.mediatypes = @[(nsstring *)kuttypemovie];
                self.imagepicker.allowsediting = no;
                [self presentviewcontroller:self.imagepicker animated:yes completion:nil];
              }];
  uialertaction *cameraaction = \
  [uialertaction actionwithtitle:@"录像"
               style:uialertactionstyledefault
              handler:^(uialertaction * _nonnull action) {
                nslog(@"录像");
                self.imagepicker.sourcetype = uiimagepickercontrollersourcetypecamera;
                self.imagepicker.cameradevice = uiimagepickercontrollercameradevicerear;
                self.imagepicker.mediatypes = [uiimagepickercontroller availablemediatypesforsourcetype:uiimagepickercontrollersourcetypecamera];
                self.imagepicker.videoquality = uiimagepickercontrollerqualitytype640x480;
                self.imagepicker.cameracapturemode = uiimagepickercontrollercameracapturemodevideo;
                self.imagepicker.allowsediting = yes;
                [self presentviewcontroller:self.imagepicker animated:yes completion:nil];
              }];
  uialertaction *cancelaction = \
  [uialertaction actionwithtitle:@"取消"
               style:uialertactionstylecancel
              handler:^(uialertaction * _nonnull action) {
                nslog(@"取消");
              }];
  [alertcontroller addaction:photoaction];
  [alertcontroller addaction:cameraaction];
  [alertcontroller addaction:cancelaction];
  [self presentviewcontroller:alertcontroller animated:yes completion:nil];
}

#3, 关于缓存, 如何把照片存入缓存目录?

这部分我们先考虑缓存目录, 一般存在document 或者 temp里面

我们给图片和视频各创建一个缓存目录:

#define photocachepath [nstemporarydirectory() stringbyappendingpathcomponent:@"photocache"]
#define videocachepath [nstemporarydirectory() stringbyappendingpathcomponent:@"videocache"]

把uiimage存入缓存的方法:

//将image保存到缓存路径中
- (void)saveimage:(uiimage *)image tocachepath:(nsstring *)path {
  nsfilemanager *filemanager = [nsfilemanager defaultmanager];
  if (![filemanager fileexistsatpath:photocachepath]) {
    nslog(@"路径不存在, 创建路径");
    [filemanager createdirectoryatpath:photocachepath
        withintermediatedirectories:yes
                attributes:nil
                   error:nil];
  } else {
    nslog(@"路径存在");
  }
  //[uiimagepngrepresentation(image) writetofile:path atomically:yes];
  [uiimagejpegrepresentation(image, 1) writetofile:path atomically:yes];
}

4. 如何把视频存入缓存?

把视频存入缓存的方法:

//将视频保存到缓存路径中
- (void)savevideofrompath:(nsstring *)videopath tocachepath:(nsstring *)path {
  nsfilemanager *filemanager = [nsfilemanager defaultmanager];
  if (![filemanager fileexistsatpath:videocachepath]) {
    nslog(@"路径不存在, 创建路径");
    [filemanager createdirectoryatpath:videocachepath
        withintermediatedirectories:yes
                attributes:nil
                   error:nil];
  } else {
    nslog(@"路径存在");
  }
  nserror *error;
  [filemanager copyitematpath:videopath topath:path error:&error];
  if (error) {
    nslog(@"文件保存到缓存失败");
  }
}

从缓存获取图片的方法:

//从缓存路径获取照片
- (uiimage *)getimagefrompath:(nsstring *)path {
  nsfilemanager *filemanager = [nsfilemanager defaultmanager];
  if ([filemanager fileexistsatpath:path]) {
    return [uiimage imagewithcontentsoffile:path];
  }
  return nil;
}

上传图片和视频的时候我们一般会利用当前时间给文件命名, 方法如下

//以当前时间合成图片名称
- (nsstring *)getimagenamebasecurrenttime {
  nsdateformatter *dateformatter = [[nsdateformatter alloc] init];
  [dateformatter setdateformat:@"yyyy-mm-dd hh-mm-ss"];
  return [[dateformatter stringfromdate:[nsdate date]] stringbyappendingstring:@".jpg"];
}
//以当前时间合成视频名称
- (nsstring *)getvideonamebasecurrenttime {
  nsdateformatter *dateformatter = [[nsdateformatter alloc] init];
  [dateformatter setdateformat:@"yyyy-mm-dd hh-mm-ss"];
  return [[dateformatter stringfromdate:[nsdate date]] stringbyappendingstring:@".mov"];
}

有时候需要获取视频的第一帧作为显示, 方法如下:

//获取视频的第一帧截图, 返回uiimage
//需要导入avfoundation.h
- (uiimage*) getvideopreviewimagewithpath:(nsurl *)videopath
{
  avurlasset *asset = [[avurlasset alloc] initwithurl:videopath options:nil];
  avassetimagegenerator *gen     = [[avassetimagegenerator alloc] initwithasset:asset];
  gen.appliespreferredtracktransform = yes;
  cmtime time   = cmtimemakewithseconds(0.0, 600);
  nserror *error  = nil;
  cmtime actualtime;
  cgimageref image = [gen copycgimageattime:time actualtime:&actualtime error:&error];
  uiimage *img   = [[uiimage alloc] initwithcgimage:image];
  return img;
}

5. 如何上传?

下面就是上传方法:

我把服务器地址xx掉了, 大家可以改为自己的

//上传图片和视频
- (void)uploadimageandmoviebasemodel:(uploadmodel *)model {
  //获取文件的后缀名
  nsstring *extension = [model.name componentsseparatedbystring:@"."].lastobject;
  //设置mimetype
  nsstring *mimetype;
  if ([model.type isequaltostring:@"image"]) {
    mimetype = [nsstring stringwithformat:@"image/%@", extension];
  } else {
    mimetype = [nsstring stringwithformat:@"video/%@", extension];
  }
  //创建afhttpsessionmanager
  afhttpsessionmanager *manager = [afhttpsessionmanager manager];
  //设置响应文件类型为json类型
  manager.responseserializer  = [afjsonresponseserializer serializer];
  //初始化requestserializer
  manager.requestserializer   = [afhttprequestserializer serializer];
  manager.responseserializer.acceptablecontenttypes = nil;
  //设置timeout
  [manager.requestserializer settimeoutinterval:20.0];
  //设置请求头类型
  [manager.requestserializer setvalue:@"form/data" forhttpheaderfield:@"content-type"];
  //设置请求头, 授权码
  [manager.requestserializer setvalue:@"ygahcmxeeht4n/dmhkka/m0npn3ko0x8pmrnl17+hogw944gdgpzvyptememdwb9nlzz7mk1jba/0fpotxezua==" forhttpheaderfield:@"authentication"];
  //上传服务器接口
  nsstring *url = [nsstring stringwithformat:@"http://xxxxx.xxxx.xxx.xx.x"];
  //开始上传
  [manager post:url parameters:nil constructingbodywithblock:^(id<afmultipartformdata> _nonnull formdata) {
    nserror *error;
    bool success = [formdata appendpartwithfileurl:[nsurl fileurlwithpath:model.path] name:model.name filename:model.name mimetype:mimetype error:&error];
    if (!success) {
      nslog(@"appendpartwithfileurl error: %@", error);
    }
  } progress:^(nsprogress * _nonnull uploadprogress) {
    nslog(@"上传进度: %f", uploadprogress.fractioncompleted);
  } success:^(nsurlsessiondatatask * _nonnull task, id _nullable responseobject) {
    nslog(@"成功返回: %@", responseobject);
    model.isuploaded = yes;
    [self.uploadedarray addobject:model];
  } failure:^(nsurlsessiondatatask * _nullable task, nserror * _nonnull error) {
    nslog(@"上传失败: %@", error);
    model.isuploaded = no;
  }];
}

这里有事先创建两个可变数组uploadarray, uploadedarray, 一个存放准要上传的内容, 一个存放上传完的内容

在准备上传后做什么操作, 可以检查两个数组的数量是否相等

最后是uiimagepickercontroller的协议方法

#pragma mark - uiimagepickerdelegate methods
- (void)imagepickercontroller:(uiimagepickercontroller *)picker
didfinishpickingmediawithinfo:(nsdictionary<nsstring *,id> *)info {
  [picker dismissviewcontrolleranimated:yes completion:nil];
  //获取用户选择或拍摄的是照片还是视频
  nsstring *mediatype = info[uiimagepickercontrollermediatype];
  if ([mediatype isequaltostring:(nsstring *)kuttypeimage]) {
    //获取编辑后的照片
    nslog(@"获取编辑后的好片");
    uiimage *tempimage = info[uiimagepickercontrollereditedimage];
    //将照片存入相册
    if (tempimage) {
      if (picker.sourcetype == uiimagepickercontrollersourcetypecamera) {
        //将照片存入相册
        nslog(@"将照片存入相册");
        uiimagewritetosavedphotosalbum(tempimage, self, nil, nil);
      }
      //获取图片名称
      nslog(@"获取图片名称");
      nsstring *imagename = [self getimagenamebasecurrenttime];
      nslog(@"图片名称: %@", imagename);
      //将图片存入缓存
      nslog(@"将图片写入缓存");
      [self saveimage:tempimage
        tocachepath:[photocachepath stringbyappendingpathcomponent:imagename]];
      //创建uploadmodel
      nslog(@"创建model");
      uploadmodel *model = [[uploadmodel alloc] init];
      model.path    = [photocachepath stringbyappendingpathcomponent:imagename];
      model.name    = imagename;
      model.type    = @"image";
      model.isuploaded = no;
      //将模型存入待上传数组
      nslog(@"将model存入待上传数组");
      [self.uploadarray addobject:model];
    }
  }
  else if ([mediatype isequaltostring:(nsstring *)kuttypemovie]) {
    if (picker.sourcetype == uiimagepickercontrollersourcetypecamera) {
      //如果是拍摄的视频, 则把视频保存在系统多媒体库中
      nslog(@"video path: %@", info[uiimagepickercontrollermediaurl]);
      alassetslibrary *library = [[alassetslibrary alloc] init];
      [library writevideoatpathtosavedphotosalbum:info[uiimagepickercontrollermediaurl] completionblock:^(nsurl *asseturl, nserror *error) {
        if (!error) {
          nslog(@"视频保存成功");
        } else {
          nslog(@"视频保存失败");
        }
      }];
    }
    //生成视频名称
    nsstring *medianame = [self getvideonamebasecurrenttime];
    nslog(@"medianame: %@", medianame);
    //将视频存入缓存
    nslog(@"将视频存入缓存");
    [self savevideofrompath:info[uiimagepickercontrollermediaurl] tocachepath:[videocachepath stringbyappendingpathcomponent:medianame]];
    //创建uploadmodel
    uploadmodel *model = [[uploadmodel alloc] init];
    model.path    = [videocachepath stringbyappendingpathcomponent:medianame];
    model.name    = medianame;
    model.type    = @"moive";
    model.isuploaded = no;
    //将model存入待上传数组
    [self.uploadarray addobject:model];
  }
  //[picker dismissviewcontrolleranimated:yes completion:nil];
}
- (void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker {
  [picker dismissviewcontrolleranimated:yes completion:nil];
}

以上所述是小编给大家介绍的ios实现视频和图片的上传思路,希望对大家有所帮助